Fig. 10From: Assessing the decorative techniques of two Art Nouveau glass windows by optical coherence tomography (OCT)a Detail of the grisaille decoration in the Atelier window (Spot 3). b OCT tomogram 34, showing the thick grisaille that creates the contour of the flower, in the left line the grisaille has been partially lost. Solid line: well-preserved grisaille; Dotted line: altered grisailleBack to article page